/**
 * 过渡
 */
.transition(@type,@time){
    -webkit-transition: @type @time;	/* Safari 和 Chrome */
       -moz-transition: @type @time;	/* Firefox 4 */
         -o-transition: @type @time;
            transition: @type @time;
}

/**
 * flex 盒子
 */
.disFlex(){
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: flex;
}

/**
 * align items
 */

 